
10
-26
Using Braking Units in Parallel
This example shows wiring for using two Braking Units in parallel.
There are connectors for selecting whether each Braking Unit is to be a Master or Slave. Select “Master” for
the first Braking Unit only, and select “Slave” for all other Braking Units (i.e., from the second Unit onwards).
Fig 10.15
THRX
THRX
1
2
TRX
TRX
MB
MC
2MCCB
MA MC
OFF
ON
MC
MC
SA
SA
SA
Braking Resistor Unit
thermal relay trip contacts
Fault contacts
A sequence is required to turn OFF the
power supply for the thermal overload relay
trip contacts of the Braking Resistor Unit.
Ground Fault Interrupter or Molded-case Circuit Breaker
Inverter
Motor
Ground to 100
Ω
max.
Forward Run Com-
mand (forward run
when ON)
Reverse Run Com-
mand (reverse run
when ON)
Forward Run/Stop
Reverse Run/Stop
Braking Unit
External fault
3-phase power supply,
200 to 220 V at 50 Hz or
200 to 230 V at 60 Hz
Thermal
protector
Thermal
protector
Brak-
ing
Resis-
tor Unit
Braking
Resistor
Unit *
Thermal switch
Level det
e
ct
or
Braking Unit 2
Thermal switch
Cooling fan
Fault contact output
* Disable the stall prevention during deceleration (set constant L3-04 to 0) when using a Brak-
ing Resistor Unit. If this user constant is not changed to disable stall prevention, the system
may not stop in the set deceleration time.
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
TOE-S616-60.1.book 26 ページ 2017年8月4日 金曜日 午後3時41分